1289313327 has 8 divisors (see below), whose sum is σ = 1721626416. Its totient is φ = 858271232.

The previous prime is 1289313307. The next prime is 1289313331. The reversal of 1289313327 is 7233139821.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1289313327 - 2¹⁰ = 1289312303 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1289313307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 315378 + ... + 319439.

It is an arithmetic number, because the mean of its divisors is an integer number (215203302).

Almost surely, 2^1289313327 is an apocalyptic number.

1289313327 is a deficient number, since it is larger than the sum of its proper divisors (432313089).

1289313327 is an equidigital number, since it uses as much as digits as its factorization.

1289313327 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 635497.

The product of its digits is 54432, while the sum is 39.

The square root of 1289313327 is about 35907.0094410548. The cubic root of 1289313327 is about 1088.3940458215.

The spelling of 1289313327 in words is "one billion, two hundred eighty-nine million, three hundred thirteen thousand, three hundred twenty-seven".